<div class="row justify-content-center" style="margin-top: 40px">
    <mat-card *ngIf="content"  style="padding: 30px 60px; width: 100%">
        <button mat-icon-button (click)="goBack()" matTooltip="返回" style="float: right">
            <mat-icon color="primary">arrow_back</mat-icon>
        </button>
        <div [innerHTML]="content | html">
        </div>
    </mat-card>
</div>

